An engineer is tasked with designing a WLAN. The customer is prioritizing data speeds to the desktop, but is also entertaining the idea of adding 802.11 phones in the future. Given this information…

Question

Options

• Aconsider the employee head count in congested office space and limit the edge of each cell to an
• Brestrict AP cell edges to -67dB and be sure to strategically place APs in congested office spaces
• Cco-locate access points when possible to cover high user areas and place APs at each corner of
• Dstagger the AP placements, and be sure to have a high signal to noise ratio that will

• A
  4% (1)
• B
  72% (18)
• C
  16% (4)
• D
  8% (2)

Explanation

Even though the primary requirement is desktop data speeds, the customer is also entertaining future 802.11 VoIP phone deployment. Voice over Wi-Fi has the most demanding RF requirements: cell edges must be kept at or above -67 dBm to ensure adequate SNR and packet success rates for real-time audio. By designing the survey to -67 dBm cell edges from the start, the network will satisfy voice requirements and inherently exceed pure-data requirements. Placing APs strategically in congested office spaces also ensures capacity where users are concentrated. Co-locating APs for coverage ignores co-channel interference, and relying solely on SNR without a defined RSSI floor does not guarantee voice quality.

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